S
M
T
W
T
F
S
28
95°
79°
29
97°
77°
30
90°
77°
1
87°
72°
2
87°
75°
3
88°
77°
4
89°
80°
5
88°
79°
6
89°
80°
7
91°
79°
8
92°
78°
9
90°
76°
10
90°
77°
11
89°
76°
12
90°
78°
13
91°
78°
14
90°
77°
15
86°
76°
16
84°
76°
17
90°
78°
18
88°
77°
19
88°
77°
20
89°
78°
21
89°
79°
22
90°
79°
23
88°
78°
24
91°
79°
25
91°
80°
26
90°
80°
27
89°
79°
28
88°
78°
29
89°
79°
30
88°
80°
31
90°
80°
1
89°
79°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Johns Island
Johns Island's July 2026 forecast shows daily high temperatures ranging from 84° to 92°, with overnight lows between 72° and 80°. The average high for July is 89° with an average low of 78°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how July weather will actually feel in Johns Island. See also: August | September | October.
